US10530061B2 - Mixed mode slot antennas - Google Patents
Mixed mode slot antennas Download PDFInfo
- Publication number
- US10530061B2 US10530061B2 US15/746,095 US201515746095A US10530061B2 US 10530061 B2 US10530061 B2 US 10530061B2 US 201515746095 A US201515746095 A US 201515746095A US 10530061 B2 US10530061 B2 US 10530061B2
- Authority
- US
- United States
- Prior art keywords
- pcb
- slot
- metal layer
- metal
- slot antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims abstract description 132
- 229910052751 metal Inorganic materials 0.000 claims abstract description 132
- 238000009413 insulation Methods 0.000 claims abstract description 7
- JFIMDKGRGPNPRQ-UHFFFAOYSA-N 1,2,3,4,5-pentachloro-6-(2,3,4,5-tetrachlorophenyl)benzene Chemical compound ClC1=C(Cl)C(Cl)=CC(C=2C(=C(Cl)C(Cl)=C(Cl)C=2Cl)Cl)=C1Cl JFIMDKGRGPNPRQ-UHFFFAOYSA-N 0.000 description 11
- JDZUWXRNKHXZFE-UHFFFAOYSA-N 1,2,3,4,5-pentachloro-6-(2,4,6-trichlorophenyl)benzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl JDZUWXRNKHXZFE-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- 241000242532 Polycladida Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
Definitions
- Communication devices include slot antennas for the purpose of communication.
- Such slot antennas generally include a long and slim slot, formed on a metal plate, to emit radio waves.
- Phones utilize the antenna for communication with radio access networks, while communication devices like laptops and tablets utilize the antenna for connecting to wireless networks like Wi-Fi.
- Design of communication devices are ever changing, and correspondingly, the design of the slot antennas also change with change in design of the communication devices.
- FIG. 1 illustrates examples of communication devices implementing mixed mode slot antenna, according to an example implementation of the present subject matter
- FIG. 2 illustrates a top view of arrangement of a mixed mode slot antenna unit implemented in a communication device, according to an example implementation of the present subject matter
- FIG. 3 illustrates a top view of various components of the mixed mode slot antenna unit implemented in a display housing, according to an example implementation of the present subject matter.
- FIG. 4 illustrates an arrangement of the mixed mode slot antenna unit, according to an example implementation of the present subject matter.
- a communication device generally comprises of a display such as a liquid crystal display (LCD) to project data for users.
- LCD liquid crystal display
- Such displays are generally housed in a housing which holds the display and provides support to different components of the display.
- the housing is hereinafter referred to as display housing.
- the display housing includes a front cover and a back cover. While the back cover is generally made of metal, and the front cover of the display housing is made of non-conductive material. Slots are created within the back cover to form a slot antenna to enable the communication device to communicate wirelessly.
- the radiation efficiency of the slot antenna is drastically reduced due to blockade of the radiations by the metal front cover. In other words, due to interrupted radiations of the slot antenna, performance of the slot antenna is significantly degraded.
- a mixed mode slot antenna for communication devices is described.
- the described mixed mode slot antenna may allow optimum performance of slot antenna in communication device comprising display housing having metal front cover and metal back cover.
- the described techniques allow improved performance of the slot antenna in full metal designs of the display housing, on the other the described techniques provides dual mode antenna, capable of operating at different frequencies, thereby increasing flexibility of operation under different environment conditions.
- a device may include a display and a mixed mode slot antenna unit housed within the display housing of the device.
- the display housing may include a metal front cover and a metal back cover, the example implantation, dual slots may be created, say a first slot and a second slot, one on each of the metal front cover and the metal back cover of the display housing of the device.
- the slots may be created such that each of the metal front cover and the metal back cover may act as a slot antenna operating at a predefined frequency.
- the metal back cover may include the first slot and the metal front cover may include the second slot.
- the mixed mode slot antenna unit may include a first printed circuit board (PCB) and a second PCB, such that one PCB is attached with the metal front cover and the other PCB is attached to the metal back cover.
- PCB printed circuit board
- the first PCB may be attached to the metal back cover of the display housing and the second PCB may be attached to the metal front cover of the display housing.
- the metal back cover including the first slot and attached to the first PCB may form a magnetic mode slot antenna.
- the metal front cover including the second slot and attached to the second PCB may form an electric mode slot antenna. It would be noted that the magnetic mode slot antenna and the electric mode slot antenna may operate at different frequencies, depending upon the size, shape and location of first slot and the second slot.
- the mixed mode slot antenna unit may include a non-conductive layer attached to the first PCB on one side and attached to the second PCB on the other side.
- the mixed mode slot antenna may include a non-conductive layer sandwiched between the first PCB layer and the second PCB layer.
- the non-conductive layer may provide insulation between the first PCB and the second PCB.
- each PCB may include a feed line to excite corresponding metal front cover and the corresponding metal back cover of the display housing.
- a mixed mode slot antenna may be formed in the display housing of the device.
- the mixed mode slot antenna may provide flexibility of operation at different frequencies in different environmental conditions without any degradation in performance in all metal designs of the display housing.
- FIG. 1 illustrates perspective views of communication devices 102 - 1 and 102 - 2 , each including slots 104 - 1 and 104 - 2 , according to an example of the present subject matter.
- the communication devices 102 - 1 and 102 - 2 have been together referred to as communication devices 102 , hereinafter.
- the slots 104 - 1 and 104 - 2 have been commonly referred to as slots 104 , hereinafter.
- Each communication device 102 may include a display housing 106 to support and hold a display 108 of the communication device 102 .
- the display housing 106 may include a first metal layer 110 and a second metal layer 112 .
- the communication device 102 may be a stationary device or a portable device.
- the display housing 106 may include a mixed mode slot antenna unit (not shown), housed between the first metal layer 110 and the second metal layer 112 .
- the communication devices 102 may include, but are not restricted to, desktop computers, laptops, smart phones, personal digital assistants (PDAs), tablets, all-in-one computers, and the like.
- the slots 104 included within each communication device 102 may be of different dimension and may be located at different positions. For example, the first slot 104 - 1 may be included on the first metal layer 110 ; while the second slot 104 - 2 may be included on the second metal layer 112 .
- the slots 104 within each of the first metal layer 110 and the second metal layer 112 may allow the first metal layer 110 and the second metal layer 112 to act as slot antennas when excited by corresponding resonance frequencies. Further, since the length and width of the slot 104 may determine the resonance frequency of slot antenna, the length, and width of the slots 104 may vary depending on the desired frequency of operation. For example, to have the second metal layer 112 acting as an electric mode slot antenna and the first metal layer 110 as a magnetic mode slot antenna, the slot 104 - 2 may be larger in length than the slot 104 - 1 .
- the display housing 106 may surround the sides, partial front, and back surface of the display 108 .
- the display housing 106 may be a metal housing including the metal front cover and the metal back cover.
- the display housing 106 may support the display 108 which may be implemented as a flat panel display, such as a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), or an electroluminescence device (EL).
- the electroluminescence device comprises an organic light emitting display with organic light emitting diodes (OLED) formed in pixels.
- the display 108 may also include touch sensitive displays, such as resistive displays, capacitive displays, acoustic wave displays, infrared (IR) displays, strain gauge displays, optical displays, acoustic pulse recognition displays, and combinations thereof.
- touch sensitive displays such as resistive displays, capacitive displays, acoustic wave displays, infrared (IR) displays, strain gauge displays, optical displays, acoustic pulse recognition displays, and combinations thereof.
- the first metal layer 110 may be the metal back cover of the display housing 106 and the second metal layer 112 may be the metal front cover of the display housing 106 . It would be noted that in another example implementation, the first metal layer 110 may correspond to the metal front cover and the second metal layer 112 may correspond to the metal back cover.
- the first metal layer 110 and the second metal layer 112 , forming part of the display housing 106 may be made of metal capable of conducting and radiating electric and magnetic energy.
- the first metal layer 110 and the second metal layer 112 may either be made of same metal, or may be made of different metals.
- the first metal layer 110 and the second metal layer 112 may house the mixed mode slot antenna unit.
- the mixed mode slot antenna unit may include a couple of printed circuit boards (PCBs) to drive the first metal layer 110 and the second metal layer 112 as slot antennas.
- PCBs printed circuit boards
- FIG. 2 represents a top view of an arrangement of the mixed mode slot antenna unit, in the communication device 102 .
- the communication device 102 may include the first metal layer 110 and the second metal layer 112 , to commonly house the display 108 .
- the first metal layer 110 may represent the metal back cover of the display housing 106
- the second metal layer 112 may represent the metal front cover of the display housing 106 .
- the first metal layer 110 may be disposed on one side of the surface of the display 108
- the second metal layer 112 may be disposed on another side of the surface of the display 108 .
- first metal layer 110 may include the first slot 104 - 1 to allow the first metal layer 110 to act as a slot antenna.
- the second metal layer 112 may include the second slot 104 - 2 to allow the second metal layer 112 to act as another slot antenna.
- the length (l) and width (not shown) of the slots 104 may determine the operating frequency of slot antennas, and therefore, the length and width of the slots 104 may vary depending on the desired frequency of operation.
- the slots 104 may be created such that the first metal layer 110 may act as a magnetic mode slot antenna, while the second metal layer 112 may act as an electric mode slot antenna.
- the first slot 104 - 1 may be of about 50 millimeters in length and 1.5 millimeters in width.
- the second slot 104 - 2 may be of about 56 millimeters in length and 1.5 millimeters in width.
- the slots 104 may be created such that the first metal layer 110 may act as electric mode slot antenna, while the second metal layer 112 may act as magnetic mode slot antenna.
- the first slot 104 - 1 may be of about 56 millimeters in length and 1.5 millimeters in width.
- the second metal layer 112 may be of about 50 millimeters in length and 1.5 millimeters in width.
- each slot 104 may be of about the thickness of each of the first metal layer 110 and the second metal layer 112 . Based on the design of the communication device 102 , the depth (d) of each of the first metal layer 110 and the second metal layer 112 may vary. For example, the depth (d) of the first metal layer 110 may be equal to the depth (d) of the second metal layer 112 . Correspondingly, the depth (d) of the first slot 104 - 1 may also be equal to the depth (d) of the second slot 104 - 2 .
- the depth (d) of the first metal layer 110 may be different than the depth (d) of the second metal layer 112 , and correspondingly, the depth (d) of the first slot 104 - 1 may be different than the depth (d) of the second slot 104 - 2 .
- the communication device 102 may include a mixed mode slot antenna unit 202 , attached to the first metal layer 110 and the second metal layer 112 .
- the mixed mode slot antenna unit 202 may be sandwiched between the first metal layer 110 and the second metal layer 112 such that mixed mode slot antenna unit 202 is housed within the display housing 106 .
- the mixed mode slot antenna unit 202 may include a first PCB 204 and a second PCB 206 , such that the first PCB 204 is attached to the first slot 104 - 1 and the second PCB 206 is attached to the second slot 104 - 2 .
- the PCBs may be composed of any suitable circuit board material, such as a di-electric material.
- the PCBs could be composed of SR4 material.
- the PCBs may be made of pre-impregnated materials, such as FR-2 (Phenolic cotton paper), FR-3 (Cotton paper and epoxy), and FR-4 (Woven glass and epoxy). Numerous variations of FR-4 may also be used, such as FR-408 and Polyclad 370HR.
- the first PCB 204 and the second PCB 206 may include printed feed lines to drive the slot antennas.
- FIG. 3 represents another top view of arrangement of a mixed mode slot antenna unit 202 implemented in a display housing 106 , according to an implementation of the present subject matter.
- the communication device 102 may include the first metal layer 110 , the second metal layer 112 , the display 108 , and the mixed mode slot antenna unit 202 .
- the mixed mode slot antenna unit 202 may also include the first PCB 204 and the second PCB 206 , along with a non-conductive layer 302 .
- the non-conductive layer 302 may be sandwiched between the first PCB 204 and the second PCB 206 for insulation. It would be noted that the non-conductive layer 302 may include any material capable of being used for the purpose of insulation.
- first PCB 204 may include a first printed feed line 304 - 1 and the second PCB 206 may include a second printed feed line 304 - 2 .
- first printed feed line 304 - 1 and the second printed feed line 304 - 2 may be commonly referred to as printed feed lines 304 , hereinafter.
- the printed feed lines 304 may drive each slot antenna at their respective operating frequencies.
- the printed feed lines 304 may be double sided flex printed circuit (FPC) feed lines such that a single printed feed line 304 is used to drive both slot antennas of the display housing 106 .
- FPC double sided flex printed circuit
- the FPC feed line may extend from the first PCB 204 to the second PCB 206 .
- the printed feed line may be attached to the first PCB 204 and the second PCB 206 by a fastener, such as a spring. It would be noted that though a spring has been mentioned to be utilized as a fastener, other fasteners may also be utilized based on implementation of the present subject matter.
- FIG. 4 illustrates an arrangement of the mixed mode slot antenna unit 202 , according to an example implementation of the present subject matter.
- the mixed mode slot antenna unit 202 may include the first metal layer 110 and the second metal layer 112 with the first slot 104 - 1 and the second slot 104 - 2 , respectively.
- the first slot 104 - 1 of the first metal layer 110 may be attached with the first PCB 204 to form a first mode antenna.
- the second slot 104 - 2 of the second metal layer 112 may be attached to the second PCB 206 to form a second mode antenna.
- the mixed mode slot antenna unit 202 may also include a non-conductive layer 402 between the first PCB 204 and the second PCB 206 . It would be noted that the non-conductive layer 402 may be made of any non-conductive material, such as a dielectric to provide insulation between the first PCB 204 and the second PCB 206 .
- the mixed mode slot antenna unit 202 may also include ground points (not shown) disposed between the first metal layer 110 and the second metal layer 112 to. Further, the mixed mode slot antenna unit 202 may also include printed feed lines corresponding to each of the PCB to drive the first mode antenna and the second mode antenna.
- first slot 104 - 1 of the first mode antenna may be of about 50 millimeters in length and 1.5 millimeters in width, such that the first mode antenna operates as a magnetic mode slot antenna.
- second slot 104 - 2 of the second metal layer 112 may be of about 56 millimeters in length and 1.5 millimeters in width, such that the second mode antenna operates as an electric mode slot antenna.
- the first mode antenna may be driven by a low band current flow to generate half wavelength slot radiations.
- the first mode antenna may be driven by a frequency of about 2400 Mega Hertz (MHz) to 2500 MHz.
- the second mode antenna may be driven by a high band current flow to generate short patch radiations.
- the second mode antenna may be driven by a frequency of about 5100 MHz to 5900 MHz.
- the implementation of the mixed mode slot antenna unit with a dual slot design may provide flexibility of operation at different range of frequencies depending upon conditions of operation. Further, the presence of two slot antenna in the mixed mode slot antenna unit provides better performance even in all metal designs of display housing of communication devices.
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- Computer Networks & Wireless Communication (AREA)
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Abstract
Description
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2015/043735 WO2017023306A1 (en) | 2015-08-05 | 2015-08-05 | Mixed mode slot antennas |
Publications (2)
Publication Number | Publication Date |
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US20180219296A1 US20180219296A1 (en) | 2018-08-02 |
US10530061B2 true US10530061B2 (en) | 2020-01-07 |
Family
ID=57943969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/746,095 Expired - Fee Related US10530061B2 (en) | 2015-08-05 | 2015-08-05 | Mixed mode slot antennas |
Country Status (3)
Country | Link |
---|---|
US (1) | US10530061B2 (en) |
TW (1) | TWI609528B (en) |
WO (1) | WO2017023306A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11527814B2 (en) | 2020-05-29 | 2022-12-13 | Samsung Electronics Co., Ltd. | Electronic device including antennas |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9667290B2 (en) | 2015-04-17 | 2017-05-30 | Apple Inc. | Electronic device with millimeter wave antennas |
TWI646729B (en) * | 2017-06-05 | 2019-01-01 | 宏碁股份有限公司 | Mobile device |
US10476136B2 (en) * | 2017-07-20 | 2019-11-12 | Apple Inc. | Electronic device with speaker port aligned antennas |
CN111418111B (en) | 2017-12-08 | 2021-11-19 | 惠普发展公司,有限责任合伙企业 | Flexible antenna strap |
Citations (17)
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US3810183A (en) | 1970-12-18 | 1974-05-07 | Ball Brothers Res Corp | Dual slot antenna device |
US4710775A (en) | 1985-09-30 | 1987-12-01 | The Boeing Company | Parasitically coupled, complementary slot-dipole antenna element |
US5717410A (en) * | 1994-05-20 | 1998-02-10 | Mitsubishi Denki Kabushiki Kaisha | Omnidirectional slot antenna |
US20060097941A1 (en) * | 2004-10-27 | 2006-05-11 | Bettner Allen W | Dual band slot antenna |
US20080231522A1 (en) * | 2007-03-25 | 2008-09-25 | Mark Montgomery | Slot antenna |
US20090102723A1 (en) | 2007-10-18 | 2009-04-23 | Mateychuk Duane N | Dual moded stacked microstrip patch antenna |
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US20110300907A1 (en) | 2010-06-03 | 2011-12-08 | Hill Robert J | Parallel-fed equal current density dipole antenna |
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-
2015
- 2015-08-05 WO PCT/US2015/043735 patent/WO2017023306A1/en active Application Filing
- 2015-08-05 US US15/746,095 patent/US10530061B2/en not_active Expired - Fee Related
-
2016
- 2016-07-20 TW TW105122880A patent/TWI609528B/en not_active IP Right Cessation
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Title |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11527814B2 (en) | 2020-05-29 | 2022-12-13 | Samsung Electronics Co., Ltd. | Electronic device including antennas |
Also Published As
Publication number | Publication date |
---|---|
TW201709611A (en) | 2017-03-01 |
US20180219296A1 (en) | 2018-08-02 |
TWI609528B (en) | 2017-12-21 |
WO2017023306A1 (en) | 2017-02-09 |
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